subject time aggreg
 1 before 25 
 2 before 25 
 3 before 27 
 4 before 44 
 5 before 30 
 6 before 67 
 7 before 53 
 8 before 53 
 9 before 52 
10 before 60 
11 before 28 
 1 after 24
 2 after 29
 3 after 37
 4 after 56
 5 after 46
 6 after 82
 7 after 57
 8 after 80
 9 after 61
10 after 59
11 after 43